- #36
OmCheeto
Gold Member
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The more I study this problem, the harder it gets.
I was thinking that maybe a refrigeration type dehydrator would remove the 'relative humidity' factor from the equation, but then I remembered that water absorbs CO2, and such a device may be scrubbing CO2 from the sample.
Low and behold, the same problem seems to exist for silica drying agents:
Errors in measurements of CO2 with the use of drying agents
I was thinking that maybe a refrigeration type dehydrator would remove the 'relative humidity' factor from the equation, but then I remembered that water absorbs CO2, and such a device may be scrubbing CO2 from the sample.
Low and behold, the same problem seems to exist for silica drying agents:
Errors in measurements of CO2 with the use of drying agents
"...silica gel (145 g anhydrous weight, mesh 6-20) adsorbed approximately 2 mmol CO2 (38% of total) over a period of 15 min..."